network utility problems

Hi everyone,

I have a new MS wireless router, and I'm having the
following problem: my wireless card software shows that
I'm connected, but the MS network utility quite often
claims that I'm not connected (to the network or the
internet). Other computers have no problem accessing the
network. I have checked the configuration--I have the
right WEP key, etc. What's weirdest is that it sometimes
connects and sometimes doesn't (while the wireless card
shows it to be always connected), and sometimes when the
utility says it's not connected, I can still access the
internet.

Thanks for your help,

--Chris